Case for a smartphone



FIG. 1 is a front isometric view of a case for a smartphone;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dot-dash broken lines in FIGS. 1, 3, and 8 form no part of the claimed design and represent the bounds of the claimed design. The dash-dash broken lines throughout the drawing figures form no part of the claimed design and depict portions of the case for smartphone that form no part of the claimed design. 

CLAIM The ornamental design for a case for a smartphone, as shown and described. 